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Showing 3 results for Hbsag

Yousef Yahyapour (phd), Mohammad Karimi (md), Nooshin Khayyer (md), Ali Hashemzade-Omran (msc), Seyyed Mohammad Jazayeri (phd), Zahra Saadatmand (bsc), Mahmoud Mahmoudi (phd),
Volume 11, Issue 1 (3-2009)
Abstract

Background and Objective: One of the most important routes of hepatitis B virus (HBV) transmission is from asymptomatic carrier mothers to their infants. It has been concluded that over 50% of Iranian carriers have contracted the infection perinatally, making this the most likely route of transmission of HBV in our country. In this study, we assessed the rate of HBV infection in children were born to HBsAg positive mothers that received hepatitis B immunoglobulin (HBIG) and the first dose of vaccine at birth and the second and third of doses of vaccine at 1 and 6 months of age, respectively. Materials and Methods: In this descreptive study, 123 infants born from HBsAg positive mothers assessed and serum sample of these subjects were tested by ELISA technique for detection of HBsAg, Anti-HBs and Anti-HBc markers. Data were then analyzed by the chi-square and fisher exact tests. Results: From 31241 pregnant women with delivery during this 5-years study about 140 (0.45%) of them were HBsAg positive. Children born to these mothers follow-up and 123 serum samples of them tested for serologic markers of HBV infection. HBsAg was found in 0.8% of the children and 91.9% had one or more serologic markers of HBV infection. Protective rate (Anti-HBs positive) and Anti-HBc positive were 82.1% and 8.9% respectively. Conclusion: This study showed that after having focuced on the vertical transmission route for many years, and implementing strategies such as vaccination and HBIG injection to neonates of HBsAg positive mothers, nowadays it seems that we should pay attention to horizontal route of HBV transmission in this area.
Kazemi Arababadi M (phd), Pourfathollah Aa (phd), Jafarzadeh A (phd), Hassanshahi Gh (phd), Daneshmandi S (msc), Afrooz Mr (bsc), Haddadian M (bsc), Mohammadizadeh F (bsc),
Volume 12, Issue 1 (3-2010)
Abstract

Background and Objective: Occult hepatitis B infection is a form of hepatitis in which despite of absence of detectable HBsAg, HBV-DNA is present in peripheral blood of patients. The mechanisms which are responsible for progression of OBI yet to be clarified but some investigators believed that the genetics and immunological parameters may are different in resistant individuals and patients. Cytokine network system could be leading alteration in viral immune response. The aim of this study was to investigate the relation between polymorphisms +874 region of IFN-Gama with occult hepatitis B infection. Materials and Methods: In this study, the plasma samples of 3700 blood donors were tested for HBsAg and anti-HBs by ELISA. The HBsAg negative and anti-HBc positive samples were selected and screened for HBV-DNA by PCR. HBV-DNA positive samples assigned as occult hepatitis B infection cases and ARMS-PCR technique were performed to examine the present polymorphisms in +874 region of IFN-Gama genes of patients with occult hepatitis B infection. Results: 352 (9.51%) out of 3700 blood samples were negative for HBsAg and positive for anti-HBc antibody. HBV-DNA was detected in 57 (16.1%) of HBsAg negative and anti-HBc positive samples. Our results showed that there was not any significant difference between patients and control group in polymorphisms in +874 region of IFN-Gama genes. Conclusion: This study showed that there is not any significant difference between polymorphisms in +874 region with IFN-Gama occult hepatitis B infection.
Cheraghali F (md), Yazarloo S (bsc), Behnampour N (msc), Azarhoush R (md),
Volume 13, Issue 4 (12-2011)
Abstract

Background and Objective: The prevalence of hepatitis B infection is increasing worldwide. The main way to prevent hepatitis B transmission to newborns can be through accurate detection of HBsAg positive pregnant women and implementation of standard protocol for their infants. Therefore, this study carried out to determine the frequency of HBsAg in pregnant women in Gorgan, Iran. Materials and Methods: This cross sectional study was done on 1553 pregnant women whom attended to Dezyani hospital in Gorgan, North of Iran during 2008-09. Blood samples were taken and tested for HBsAg and HBeAg using ELISA method. Results: HBsAg was found positive in 15 (1%) pregnant women. However, HBeAg were negative in all cases. Seven of these cases (46.7%) were not diagnosed before admission to the hospital for delivery and therefore had not received any immunoprophylaxis or HBIG treatment for their newborns. In contrary, six mothers and their newborns received immunoprophylaxis due to falsely diagnosed HBsAg seropositive. Conclusion: This study showed that the current protocols for dealing with HBsAg seropositivity and case finding among pregnant women in this region should be thoroughly revised. Furthermore, it is suggested that pregnant women during third trimester should be screened for HBsAg.

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مجله دانشگاه علوم پزشکی گرگان Journal of Gorgan University of Medical Sciences
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